You have absolutely no way of knowing that. What you mean is, you personally don't think teams that land Zion would trade him for AD.
Well I think they would, depending on the team. I think NY would do it, for example, but Atlanta wouldn't.
I have exactly as much evidence and proof as you do: that is, none. So if someone else disagrees, you can't really say they're wrong, because they've got just as much reason to think what they do as you have to think what you do.